Earticle

Not only in the text, but also with the text, linguistic image comes into being. This means that it cannot only be interpreted, but it can also be presented physically. Here begins the issue of ‘presence culture’ as a relative concept of ‘meaning culture’. The so-called ‘pictorial/iconic turn’ sheds light on this material character of text. The text as a type of image presents itself sensately and enters spatially into relations with us. This iconization of text reminds us of the long history regarding the connection between image and text. In artistic tradition, such as text-labyrinth, micrography and concrete poem, the iconic text produces the meaning not only with the aid of grammatical structure, but also with visual sequence. The characters as abstract elements produce a visual form, and they create sensation and life in its visual sequence. The text constitutes a meta-code of image, in that it makes a visual form as such, and the image also becomes a meta-code of text because it restructures the text visually. In this way, image and text coalesce in a type of circular and dialectic relationship. This conglomerate finds a possibility in the artificial life art and bio art. In the artistic practice of computer algorithm and DNA scripts, it has an opportunity to be changed not only into aesthetic life but also into real life. The combination of characters does not make a sentence nor a visual form, but builds levels where real life can be emergent. Although we cannot explain why, there is a marvellous change, while the characters are combined, arranged, and changed chemically, physiologically, and electrically. Indeed, this kind of emergence of life completes the idea of presence. The image. or the text. does not only represent the reality, it also constitutes levels of life, presents itself, and becomes a life.

본 연구에서는 미분탄의 연소과정을 파악하기 위하여 메탄-공기 예혼합 화염에서 연소중인 석탄입자를 단계별로 여러 위치에서 순간 냉각에 의해 채취한 후 단면을 관측함으로써 미분탄 연소과정의 해석을 시도하였다. 산소 함유량이 미분탄 연소에 미치는 영향을 고려하기 위하여 반응로에서의 연소 조건을 바꾸어 보았다. 또한 미분탄 연소과정의 이해를 돕기 위해 비분탄을 도가니에 넣어 전기 로에서 가열하여 얻은 챠르와 공기중에서 가열하여 얻은 회(ash)에 대한 단면을 관측하였다. 시험용 미분탄은 국내 발전소 등지에서 대량 소비되는 수입 유연탄을 사용하였다.

An experimental investigation on the combustion behavior of pulverized coal particles was performed using the cross-section micrography techniques while sample coal particles were collected in-situ from the flow reactor. The coal particles were representative of pulverized bituminous coal undergoing a raped pyrolysis and combustion, however, quenched at the time when the particles were deposited onto a sample plate. The internal structure of coal was observed to change as deposited. Upon injection into a flow reactor, bituminous coal particles showed many holes which represented internal pore formation during the pyrolysis. The relative portion of the remaining matrix of coal was decreasing as the residence time progressed. This direct observation of cross-section of burning particles enabled better understanding of the coal combustion behavior.